<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e2292-2568-722f-a187-140c9b446ee9,g:d4eb16fc-5ae2-445c-b9fd-fe4ed6d9c6b1-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONUNAUDITED" xlink:type="simple" xlink:href="itc-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONUNAUDITED"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e2292-260d-7f0a-8ed2-2314f4784fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e2292-260d-76d0-bc75-75441bbd5bc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e2292-260d-7f0a-8ed2-2314f4784fb1" xlink:to="loc_us-gaap_CommonStockValue_019e2292-260d-76d0-bc75-75441bbd5bc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e2292-260d-709d-a754-edc998f134cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e2292-260d-7f0a-8ed2-2314f4784fb1" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e2292-260d-709d-a754-edc998f134cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e2292-260d-777c-9b5f-1d82f30341c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e2292-260d-7f0a-8ed2-2314f4784fb1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e2292-260d-777c-9b5f-1d82f30341c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_019e2292-260d-7af5-9a3e-f4cb7391971e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e2292-260d-777a-b674-a1622e45a41a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_019e2292-260d-7af5-9a3e-f4cb7391971e" xlink:to="loc_us-gaap_Goodwill_019e2292-260d-777a-b674-a1622e45a41a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_019e2292-260d-79c9-9046-ab7572c63d39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_019e2292-260d-7af5-9a3e-f4cb7391971e" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_019e2292-260d-79c9-9046-ab7572c63d39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019e2292-260d-710e-83af-ef88276ebb93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_019e2292-260d-7af5-9a3e-f4cb7391971e" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019e2292-260d-710e-83af-ef88276ebb93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019e2292-260d-79d1-b120-bc49778149dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_019e2292-260d-7af5-9a3e-f4cb7391971e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019e2292-260d-79d1-b120-bc49778149dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e2292-260d-751c-84c9-4c9df95860b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_019e2292-260d-705c-80f5-592293ca5b7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e2292-260d-751c-84c9-4c9df95860b2" xlink:to="loc_us-gaap_AssetsNoncurrent_019e2292-260d-705c-80f5-592293ca5b7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019e2292-260d-78ec-bf21-60bba2db792d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e2292-260d-751c-84c9-4c9df95860b2" xlink:to="loc_us-gaap_AssetsCurrent_019e2292-260d-78ec-bf21-60bba2db792d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e2292-260d-7d76-ac89-eccdc6d15aa9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-7487-ad59-d9da20ab102d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e2292-260d-7d76-ac89-eccdc6d15aa9" xlink:to="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-7487-ad59-d9da20ab102d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7f45-bbb0-b9179247986b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e2292-260d-7d76-ac89-eccdc6d15aa9" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7f45-bbb0-b9179247986b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019e2292-260d-741b-aedd-5a42c39250e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_AccountsPayableCurrent_019e2292-260d-741b-aedd-5a42c39250e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019e2292-260d-7126-9221-a2106e353025" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019e2292-260d-7126-9221-a2106e353025" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_019e2292-260d-7d4d-9ada-50c09bdb792d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_InterestPayableCurrent_019e2292-260d-7d4d-9ada-50c09bdb792d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_019e2292-260d-7ad7-b97b-cab8a2740167" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_TaxesPayableCurrent_019e2292-260d-7ad7-b97b-cab8a2740167" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_019e2292-260d-7a01-b4a8-cef08f634bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_019e2292-260d-7a01-b4a8-cef08f634bd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019e2292-260d-7393-9cd8-99d5ed421dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019e2292-260d-7393-9cd8-99d5ed421dfa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019e2292-260d-7e93-be65-1b283d30d230" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_LongTermDebtCurrent_019e2292-260d-7e93-be65-1b283d30d230" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_019e2292-260d-7c32-a314-2ea89f8e133a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e2292-260d-792b-af96-82371b3afee5" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_019e2292-260d-7c32-a314-2ea89f8e133a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_019e2292-260d-77c5-b790-ca08dd9d3e99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_019e2292-260d-77c5-b790-ca08dd9d3e99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e2292-260d-7a15-a242-a46b4fb26197" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e2292-260d-7a15-a242-a46b4fb26197" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_019e2292-260d-74a4-957f-f72d7461b967" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_019e2292-260d-74a4-957f-f72d7461b967" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019e2292-260d-79fc-a667-21f66f153f21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019e2292-260d-79fc-a667-21f66f153f21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019e2292-260d-729e-9ef7-7c6c4cc5cf16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019e2292-260d-7788-b7b6-12720df23816" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019e2292-260d-729e-9ef7-7c6c4cc5cf16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e2292-260d-7589-91e7-1aa661424443" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e2292-260d-7589-91e7-1aa661424443" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019e2292-260d-79f3-8723-1cb3e28f6daf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019e2292-260d-79f3-8723-1cb3e28f6daf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019e2292-260d-7f3c-b47c-338b1ad36eb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:to="loc_us-gaap_InventoryNet_019e2292-260d-7f3c-b47c-338b1ad36eb8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_019e2292-260d-7e23-a495-541344885f3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_019e2292-260d-7e23-a495-541344885f3e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019e2292-260d-7213-b817-18c735e68af7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e2292-260d-76ac-bae1-837bdf7260c0" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019e2292-260d-7213-b817-18c735e68af7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e2292-260d-72eb-acf3-7e6b5e23af97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e2292-260d-7dab-b3ad-86ffac0acd76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e2292-260d-72eb-acf3-7e6b5e23af97" xlink:to="loc_us-gaap_Liabilities_019e2292-260d-7dab-b3ad-86ffac0acd76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e2292-260d-7ee4-ac8b-98ffff24c47b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e2292-260d-72eb-acf3-7e6b5e23af97" xlink:to="loc_us-gaap_StockholdersEquity_019e2292-260d-7ee4-ac8b-98ffff24c47b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUNAUDITED" xlink:type="simple" xlink:href="itc-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUNAUDITED"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019e2292-260d-7039-a5f9-0fbc6f6b6072" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_019e2292-260d-7136-838d-a26bed6f3390" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019e2292-260d-7039-a5f9-0fbc6f6b6072" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations_019e2292-260d-7136-838d-a26bed6f3390" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019e2292-260d-710f-99e7-75142da0ae7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019e2292-260d-7039-a5f9-0fbc6f6b6072" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019e2292-260d-710f-99e7-75142da0ae7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_019e2292-260d-7f03-aa35-ccf1fa10acb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019e2292-260d-7039-a5f9-0fbc6f6b6072" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_019e2292-260d-7f03-aa35-ccf1fa10acb5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_019e2292-260d-7323-b714-93e12a958418" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019e2292-260d-7039-a5f9-0fbc6f6b6072" xlink:to="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_019e2292-260d-7323-b714-93e12a958418" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-7ccc-aa2c-37004e5c4b5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019e2292-260d-7bf3-90c4-da79de28cbbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-7ccc-aa2c-37004e5c4b5d" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019e2292-260d-7bf3-90c4-da79de28cbbf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_019e2292-260d-72ed-8fe1-b102c5dadf94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-7ccc-aa2c-37004e5c4b5d" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_019e2292-260d-72ed-8fe1-b102c5dadf94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2292-260d-77aa-9568-2ef1ac901e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-7ccc-aa2c-37004e5c4b5d" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2292-260d-77aa-9568-2ef1ac901e6f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e2292-260d-7a91-9a6b-0bfa58bd502d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2292-260d-7399-8dff-d0ffe2c2a0e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_019e2292-260d-7a91-9a6b-0bfa58bd502d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2292-260d-7399-8dff-d0ffe2c2a0e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_itc_FormulaRateTrueUpRevenue_019e2292-260d-7629-83e4-0350abfe83ba" xlink:href="itc-20260630.xsd#itc_FormulaRateTrueUpRevenue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_019e2292-260d-7a91-9a6b-0bfa58bd502d" xlink:to="loc_itc_FormulaRateTrueUpRevenue_019e2292-260d-7629-83e4-0350abfe83ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e2292-260d-7d27-ab28-34d7cdb20af0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e2292-260d-7b06-8304-09e2310aa625" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e2292-260d-7d27-ab28-34d7cdb20af0" xlink:to="loc_us-gaap_NetIncomeLoss_019e2292-260d-7b06-8304-09e2310aa625" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7b8d-80c2-3ba297b483ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e2292-260d-7d27-ab28-34d7cdb20af0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7b8d-80c2-3ba297b483ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e2292-260d-7045-9711-7de8c41a89cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019e2292-260d-700a-b0d8-9366ba827b5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019e2292-260d-7045-9711-7de8c41a89cf" xlink:to="loc_us-gaap_Revenues_019e2292-260d-700a-b0d8-9366ba827b5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019e2292-260d-79a0-8d17-dfe65596f581" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019e2292-260d-7045-9711-7de8c41a89cf" xlink:to="loc_us-gaap_OperatingExpenses_019e2292-260d-79a0-8d17-dfe65596f581" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e2292-260d-78fa-8cb8-3489d84adff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e2292-260d-7479-846b-4aa08ad48abd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e2292-260d-78fa-8cb8-3489d84adff6" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e2292-260d-7479-846b-4aa08ad48abd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2292-260d-76f6-adc2-db4d08b54911" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e2292-260d-78fa-8cb8-3489d84adff6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2292-260d-76f6-adc2-db4d08b54911" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7202-966c-6a87c637c498" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeOtherNetOfTax_019e2292-260d-7dbb-8f14-f149e18e05bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeOtherNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7202-966c-6a87c637c498" xlink:to="loc_us-gaap_OtherComprehensiveIncomeOtherNetOfTax_019e2292-260d-7dbb-8f14-f149e18e05bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2292-260d-7b4e-83ac-52c1a978182a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e2292-260d-7b26-b2c2-f251c73fb442" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2292-260d-7b4e-83ac-52c1a978182a" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e2292-260d-7b26-b2c2-f251c73fb442" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-71d2-ae4a-7ac786c239fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2292-260d-7b4e-83ac-52c1a978182a" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019e2292-260d-71d2-ae4a-7ac786c239fd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED" xlink:type="simple" xlink:href="itc-20260630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e2292-260d-7655-9202-03d16f3c56cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019e2292-260d-7655-9202-03d16f3c56cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_019e2292-260d-74f6-bf77-4d9dc4dbca4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_019e2292-260d-74f6-bf77-4d9dc4dbca4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_019e2292-260d-7d78-a1a7-51b88861f3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromRepaymentsOfCommercialPaper"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_019e2292-260d-7d78-a1a7-51b88861f3d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019f475a-9e3b-75a8-b211-77477e974476" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019f475a-9e3b-75a8-b211-77477e974476" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_019e2292-260d-745b-afec-0e106993d39f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_019e2292-260d-745b-afec-0e106993d39f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_019e2292-260d-723d-9492-5926fdca8bec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_PaymentsOfDividends_019e2292-260d-723d-9492-5926fdca8bec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_itc_RefundableDepositsFromGeneratorsForTransmissionNetworkUpgradesFinancingActivities_019e2292-260d-7f03-a05f-c0949027090c" xlink:href="itc-20260630.xsd#itc_RefundableDepositsFromGeneratorsForTransmissionNetworkUpgradesFinancingActivities"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_itc_RefundableDepositsFromGeneratorsForTransmissionNetworkUpgradesFinancingActivities_019e2292-260d-7f03-a05f-c0949027090c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_itc_RepaymentOfRefundableDepositsFromGeneratorsForTransmissionNetworkUpgrades_019e2292-260d-7379-bde5-cab9b8563761" xlink:href="itc-20260630.xsd#itc_RepaymentOfRefundableDepositsFromGeneratorsForTransmissionNetworkUpgrades"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_itc_RepaymentOfRefundableDepositsFromGeneratorsForTransmissionNetworkUpgrades_019e2292-260d-7379-bde5-cab9b8563761" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019e2292-260d-703a-aa8d-eede0f1577fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-7505-afa3-6b806f266d23" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019e2292-260d-703a-aa8d-eede0f1577fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e2292-260d-783a-aa90-c4e585076e8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019e2292-260d-7110-a185-20031a0c172c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e2292-260d-783a-aa90-c4e585076e8d" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019e2292-260d-7110-a185-20031a0c172c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019e2292-260d-7573-b306-9a2dc76f0594" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e2292-260d-783a-aa90-c4e585076e8d" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019e2292-260d-7573-b306-9a2dc76f0594" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e2292-260d-7a9b-94f5-46dae523b8ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_NetIncomeLoss_019e2292-260d-7a9b-94f5-46dae523b8ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019e2292-260d-79a0-90ed-662d7ad2ba46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019e2292-260d-79a0-90ed-662d7ad2ba46" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_019e2292-260d-7559-8d5e-5f7730cc09c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_019e2292-260d-7559-8d5e-5f7730cc09c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e2292-260d-7ba9-9910-fa975065b1e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019e2292-260d-7ba9-9910-fa975065b1e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_019e2292-260d-74b1-b32c-2b809b5b6648" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_019e2292-260d-74b1-b32c-2b809b5b6648" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019e2292-260d-7baf-a6a3-fbb6f53cd424" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019e2292-260d-7baf-a6a3-fbb6f53cd424" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019e2292-260d-7131-be44-67f81a390de5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019e2292-260d-7131-be44-67f81a390de5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e2292-260d-77fa-9282-ca360ceb6c28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e2292-260d-77fa-9282-ca360ceb6c28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019e2292-260d-7343-8ad2-01fce70808f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019e2292-260d-7343-8ad2-01fce70808f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019e2292-260d-705f-ac57-968afdf1ed62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019e2292-260d-705f-ac57-968afdf1ed62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_019e2292-260d-7746-ac86-f28d018f3ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_019e2292-260d-7746-ac86-f28d018f3ec4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_019e2292-260d-7b27-a09f-4871ac7a96b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedTaxesPayable"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_019e2292-260d-7b27-a09f-4871ac7a96b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_019e2292-260d-7d38-9884-42fbf33c8103" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7890-af7e-9596a2c784f8" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_019e2292-260d-7d38-9884-42fbf33c8103" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e2292-260d-7c2d-aeb2-34a8da17f779" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7ef4-86bf-6bcd37a5aa5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e2292-260d-7c2d-aeb2-34a8da17f779" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e2292-260d-7ef4-86bf-6bcd37a5aa5a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e2292-260d-721a-940b-fc49f3f5faa2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e2292-260d-7c2d-aeb2-34a8da17f779" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e2292-260d-721a-940b-fc49f3f5faa2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-753e-b860-45dec9e5df3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e2292-260d-7c2d-aeb2-34a8da17f779" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e2292-260d-753e-b860-45dec9e5df3c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/DEBTScheduleofRevolvingCreditAgreementsDetails" xlink:type="simple" xlink:href="itc-20260630.xsd#DEBTScheduleofRevolvingCreditAgreementsDetails"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/DEBTScheduleofRevolvingCreditAgreementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_019e2292-260d-7c39-9aad-d74e48031e26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019e2292-260d-7764-a62c-2b6962aeb47e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_019e2292-260d-7c39-9aad-d74e48031e26" xlink:to="loc_us-gaap_LineOfCredit_019e2292-260d-7764-a62c-2b6962aeb47e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e2292-260d-77d7-9f0e-65a0d1f2be1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_019e2292-260d-7c39-9aad-d74e48031e26" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e2292-260d-77d7-9f0e-65a0d1f2be1b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofNetDefinedBenefitCostComponentsDetails" xlink:type="simple" xlink:href="itc-20260630.xsd#RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofNetDefinedBenefitCostComponentsDetails"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofNetDefinedBenefitCostComponentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019e2292-260d-7bf7-8b7d-f1e75bcefb62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_019e2292-260d-774c-9f99-bccebb37e1e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019e2292-260d-7bf7-8b7d-f1e75bcefb62" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_019e2292-260d-774c-9f99-bccebb37e1e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_019e2292-260d-7ad4-8327-65ac6d5a63cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019e2292-260d-7bf7-8b7d-f1e75bcefb62" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_019e2292-260d-7ad4-8327-65ac6d5a63cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019e2292-260d-7142-a51b-04e609c6a691" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019e2292-260d-7bf7-8b7d-f1e75bcefb62" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019e2292-260d-7142-a51b-04e609c6a691" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019e2292-260d-7800-9ec4-ae7d6f35cf51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019e2292-260d-7bf7-8b7d-f1e75bcefb62" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019e2292-260d-7800-9ec4-ae7d6f35cf51" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="itc-20260630.xsd#STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7dc4-826e-751eaa736929" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019e2292-260d-7fe4-a7ae-11a13aaa8632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7dc4-826e-751eaa736929" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019e2292-260d-7fe4-a7ae-11a13aaa8632" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_019e2292-260d-74a0-b53e-4c4edf8c4803" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019e2292-260d-7dc4-826e-751eaa736929" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_019e2292-260d-74a0-b53e-4c4edf8c4803" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONRestrictedcashreconciliationDetails" xlink:type="simple" xlink:href="itc-20260630.xsd#SUPPLEMENTALFINANCIALINFORMATIONRestrictedcashreconciliationDetails"/>
  <link:calculationLink xlink:role="http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONRestrictedcashreconciliationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019e2292-260e-79eb-857a-3c8fe91edca0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e2292-260e-745e-8daa-a6cf63876eff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019e2292-260e-79eb-857a-3c8fe91edca0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e2292-260e-745e-8daa-a6cf63876eff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_019e2292-260e-75cb-b2d0-6f6141d487af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019e2292-260e-79eb-857a-3c8fe91edca0" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_019e2292-260e-75cb-b2d0-6f6141d487af" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
